DTLS: check at runtime whether GnuTLS is giving us a zero'ed ClientHello
Use a handshake hook, and abort the handshake if it fails.
Signed-off-by: Luca Boccassi luca.boccassi@microsoft.com
Use a handshake hook, and abort the handshake if it fails.
Signed-off-by: Luca Boccassi luca.boccassi@microsoft.com